https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117223
Bug ID: 117223
Summary: ICE: RTL check: expected elt 2 type 'B', have '0' (rtx
barrier) in BLOCK_FOR_INSN, at rtl.h:1495 with custom
flags
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 59392
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59392&action=edit
reduced testcase
This might need RTL checking enabled.
Compiler output:
$ x86_64-pc-linux-gnu-gcc -Os -fnon-call-exceptions -fprofile-generate
-finline-stringops -mstringop-strategy=libcall -fno-tree-coalesce-vars
testcase.c -Wno-psabi
during RTL pass: expand
testcase.c: In function 'foo':
testcase.c:16:1: internal compiler error: RTL check: expected elt 2 type 'B',
have '0' (rtx barrier) in BLOCK_FOR_INSN, at rtl.h:1495
16 | }
| ^
0x2c8a8be internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:517
0x8388b7 rtl_check_failed_type1(rtx_def const*, int, int, char const*, int,
char const*)
/repo/gcc-trunk/gcc/rtl.cc:751
0x78341b BLOCK_FOR_INSN(rtx_def*)
/repo/gcc-trunk/gcc/rtl.h:1495
0x786b33 BLOCK_FOR_INSN(rtx_def*)
/repo/gcc-trunk/gcc/emit-rtl.cc:4384
0x786b33 set_block_for_insn(rtx_insn*, basic_block_def*)
/repo/gcc-trunk/gcc/rtl.h:1500
0x786b33 add_insn_before(rtx_insn*, rtx_insn*, basic_block_def*)
/repo/gcc-trunk/gcc/emit-rtl.cc:4379
0x1135bf0 emit_pattern_before_noloc
/repo/gcc-trunk/gcc/emit-rtl.cc:4647
0x1056dfd commit_one_edge_insertion(edge_def*)
/repo/gcc-trunk/gcc/cfgrtl.cc:2106
0x105c121 commit_edge_insertions()
/repo/gcc-trunk/gcc/cfgrtl.cc:2168
0x103c790 execute
/repo/gcc-trunk/gcc/cfgexpand.cc:6971
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r15-4479-20241018160457-g3a12ac40325-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/15.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --enable-libsanitizer
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r15-4479-20241018160457-g3a12ac40325-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20241016 (experimental) (GCC)
